Coal rock dynamic disaster early warning device and method

Abstract

The embodiment of the present application provides a coal rock dynamic disaster early warning device and method, and belongs to the technical field of coal rock dynamic disaster early warning.The device comprises: at least one coal rock charge probe, which is suitable for being arranged at a coal mining face and is used for detecting charge data generated due to coal rock rupture in a coal mining process; and a monitoring host, which is electrically connected with the coal rock charge probe and is used for acquiring the charge data and performing coal rock dynamic disaster early warning according to the charge data.The embodiment of the present application provides a multi-channel, non-manual contact and portable coal rock dynamic disaster early warning device, and realizes safe, efficient and intelligent coal rock dynamic disaster early warning.

Description

Technical Field

[0001] This invention relates to the field of early warning technology for coal and rock dynamic disasters, and specifically to an early warning device and method for coal and rock dynamic disasters. Background Technology

[0002] As coal mining depth increases, coal and rock dynamic disasters occur more frequently, and their intensity and destructive power are also showing a gradual upward trend. Therefore, the ability to accurately predict coal and rock dynamic disasters is of paramount importance for the safe and efficient production of coal mines.

[0003] Currently, there are various early warning methods for coal and rock dynamic disasters, mainly divided into two categories:

[0004] The first category consists of conventional indicator prediction methods, including drill cuttings volume and initial gas emission velocity from boreholes. These conventional indicators can reflect abnormal gas phenomena during coal mining to some extent, but they have obvious drawbacks. They are usually time-consuming and labor-intensive, and the accuracy of the prediction results is often not high, which affects the high efficiency and high production of the mine.

[0005] The second category comprises geophysical monitoring methods developed based on the first category and which have gradually gained attention from researchers. Commonly used geophysical monitoring methods include acoustic emission monitoring, electromagnetic radiation monitoring, and microseismic methods. However, these methods generally suffer from drawbacks such as susceptibility to interference, low positioning accuracy, high investment costs, and deployment significantly affected by the mining area.

[0006] Therefore, there is an urgent need for a new early warning scheme for coal and rock dynamic disasters to ensure the safe and efficient production needs of coal mines. Summary of the Invention

[0007] The purpose of this invention is to provide a coal and rock dynamic disaster early warning device and method to at least partially solve the above-mentioned technical problems.

[0008] To achieve the above objectives, embodiments of the present invention provide a coal and rock dynamic disaster early warning device, comprising: at least one coal and rock charge probe adapted to the coal mining face for detecting charge data generated by coal and rock fracturing during coal mining; and a monitoring host electrically connected to the coal and rock charge probe for acquiring and performing early warning of coal and rock dynamic disasters based on the charge data.

[0009] Optionally, the number of coal and rock charge probes is one, and the monitoring host is used to provide early warning of coal and rock dynamic disasters based on the charge data, including: acquiring real-time charge data detected by the coal and rock charge probe; if the amplitude of the charge data exceeds a set amplitude, indicating the presence of a coal and rock dynamic disaster of the first risk level; acquiring charge data detected by the coal and rock charge probe within a preset time period; if the frequency with which the amplitude of the charge data exceeds the set amplitude within the preset time period is greater than a set frequency, indicating the presence of a coal and rock dynamic disaster of the second risk level; and / or acquiring charge data detected by the coal and rock charge probe within adjacent specified periods; if the proportion by which the amplitude of the charge data in the later period exceeds the amplitude of the charge data in the previous period is greater than a preset proportion, indicating the presence of a coal and rock dynamic disaster of the first risk level. Wherein, the second risk level is higher than the first risk level.

[0010] Optionally, the number of coal and rock charge probes is at least two, and the monitoring host is used to provide early warning of coal and rock dynamic disasters based on the charge data, including: acquiring charge data detected in real time by the at least two coal and rock charge probes; if the amplitude of the charge data from any one coal and rock charge probe exceeds a set amplitude, indicating the existence of a coal and rock dynamic disaster of the first risk level; if the amplitude of all acquired charge data exceeds the set amplitude, indicating the existence of a coal and rock dynamic disaster of the second risk level; and determining the location of the source of the coal and rock dynamic disaster based on all acquired charge data. The second risk level is higher than the first risk level.

[0011] Optionally, the coal and rock charge probe includes: a housing; a sensing element disposed on one outer end of the housing for sensing charge data generated during the coal and rock fracturing process; a circuit board disposed inside the housing and electrically connected to the sensing element and the monitoring host for signal processing of the charge data sensed by the sensing element and transmitting the processed charge data to the monitoring host; and an insulating plug disposed between the sensing element and the housing and threadedly connected to the housing for establishing electrical insulation between the sensing element and the housing.

[0012] Optionally, the sensing element is a stainless steel sensing element or a pure copper sensing element, and / or the circuit board is a stainless steel circuit board.

[0013] Optionally, the circuit board integrates a filtering unit for filtering the charge data sensed by the sensing sheet.

[0014] Optionally, the monitoring host includes: a data acquisition board electrically connected to the coal and rock charge probe for acquiring the charge data; a display screen for acquiring and displaying the charge data from the data acquisition board; and a battery for supplying power to the data acquisition board and the display screen, and for supplying power to the coal and rock charge probe through the data acquisition board.

[0015] Optionally, the monitoring host further includes a channel interface for the coal and rock charge probe, wherein each coal and rock charge probe corresponds to one channel interface, and the channel interface is used to realize the electrical connection between the corresponding coal and rock charge probe and the acquisition board.

[0016] On the other hand, the present invention provides a method for early warning of coal and rock dynamic disasters, which employs any of the above-mentioned coal and rock dynamic disaster early warning devices, and includes: arranging the coal and rock charge probes adapted to the coal mining face, and fixing the monitoring host according to the position of the coal and rock charge probes; and acquiring the charge data detected by the coal and rock charge probes through the monitoring host, and performing early warning of coal and rock dynamic disasters based on the charge data.

[0017] Optionally, the arrangement of the coal and rock charge probes adapted to the coal mining face includes: arranging boreholes for placing the coal and rock charge probes at one or more locations in the intake and / or return airway corresponding to the coal mining face and at a distance within a specified distance range from the coal mining face, wherein each coal and rock charge probe is placed in one borehole.

[0018] Through the above technical solutions, the embodiments of the present invention provide a multi-channel, non-manual contact and portable early warning device for coal and rock dynamic disasters, realizing safe, efficient and intelligent early warning of coal and rock dynamic disasters.

[0019] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the coal and rock dynamic disaster early warning device according to an embodiment of the present invention;

[0022] Figure 2 This is a field layout diagram of the coal and rock dynamic disaster early warning device according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the coal and rock charge probe in a preferred embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the monitoring host structure in a preferred embodiment of the present invention; and

[0025] Figure 5 This is a flowchart illustrating another embodiment of the coal and rock dynamic disaster early warning method of the present invention.

[0026] Explanation of reference numerals in the attached figures

[0027] 100. Coal and rock charge probe; 200. Monitoring host.

[0028] 100A, First coal and rock charge probe; 100B, Second coal and rock charge probe; 100C, Third coal and rock charge probe; 100D, Fourth coal and rock charge probe.

[0029] 101. Housing; 102. Sensor plate; 103. Circuit board; 104. Insulating plug; 105. Circuit connection wire; 106. Outlet horn; 107. Output cable.

[0030] 201. Acquisition board; 202. Display screen; 203. Battery.

[0031] 301, First channel interface; 302, Second channel interface; 303, Third channel interface; 304, Fourth channel interface; 305, USB interface; 306, Charging interface; 307, Power button.

[0032] 400. Coal mining face; 401. Intake airway; 402. Return airway; 403. Coal and rock charge monitoring borehole in the intake airway; 404. Coal and rock charge monitoring borehole in the return airway. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0034] It should be noted that the term "electrical connection" in the embodiments of this invention refers to a signal connection between two components, such as a circuit connection or a signal line connection. This connection can be a direct electrical connection between the two components or an indirect electrical connection through other components or circuits. Furthermore, the "filtering unit" in the embodiments of this invention can be a circuit formed by multiple components or a single component with filtering function. Additionally, in the embodiments of this invention, "data" and "signal" can be understood as equivalent.

[0035] Figure 1 This is a schematic diagram of the structure of the coal and rock dynamic disaster early warning device according to an embodiment of the present invention. Figure 1As shown, the coal and rock dynamic disaster early warning device may include: at least one coal and rock charge probe 100, adapted to the coal mining face, for detecting charge data generated by coal and rock fracturing during the coal mining process; and a monitoring host 200, electrically connected to the coal and rock charge probe 100, for acquiring and performing early warning of coal and rock dynamic disasters based on the charge data.

[0036] The at least one coal and rock charge probe 100 includes, for example, a first coal and rock charge probe 100A, a second coal and rock charge probe 100B, a third coal and rock charge probe 100C, and a fourth coal and rock charge probe 100D. Additionally, the monitoring host 200 may be provided with a channel interface for each coal and rock charge probe 100, which is used to electrically connect the corresponding coal and rock charge probe 100 to the monitoring host 200. Each coal and rock charge probe corresponds to one channel interface. For example, the first channel interface 301, the second channel interface 302, the third channel interface 303, and the fourth channel interface 304 are respectively used to connect the first coal and rock charge probe 100A, the second coal and rock charge probe 100B, the third coal and rock charge probe 100C, and the fourth coal and rock charge probe 100D.

[0037] Regarding the application of the aforementioned coal and rock dynamic disaster prediction device, for example... Figure 2This is a site layout diagram of the coal and rock dynamic disaster early warning device according to an embodiment of the present invention. Within a range of 20 to 50 meters from the working face ahead in the intake airway 401 and / or return airway 402 of the coal mining face 400, corresponding coal and rock charge monitoring boreholes 403 in the intake airway and / or 404 in the return airway are arranged, with each borehole spaced 3 meters apart and a depth of 1 to 2 meters. After removing excess coal slag from the boreholes, the operator places the coal and rock charge probe 100 at a position 10 to 30 centimeters inside the monitoring borehole, fixes the monitoring host 200, turns on the power switch, and observes the coal and rock charge data and its change curve. In a first preferred embodiment, the number of coal and rock charge probes is one, for example, a first coal and rock charge probe 100A, which is correspondingly installed in the coal and rock charge monitoring borehole 403 in the intake airway or the coal and rock charge monitoring borehole 404 in the return airway. In this scenario, the monitoring host 200's function of providing early warning of coal and rock dynamic disasters based on the charge data includes: acquiring real-time charge data detected by the coal and rock charge probe; if the amplitude of the charge data exceeds a set amplitude, indicating the presence of a coal and rock dynamic disaster of the first risk level; acquiring charge data detected by the coal and rock charge probe within a preset time period (e.g., within one minute); if the frequency with which the amplitude of the charge data exceeds the set amplitude within the preset time period is greater than a set frequency, indicating the presence of a coal and rock dynamic disaster of the second risk level; and / or acquiring charge data detected by the coal and rock charge probe within an adjacent specified period (e.g., within one day); if the proportion by which the amplitude of the charge data in the later period exceeds the amplitude of the charge data in the previous period is greater than a preset proportion, indicating the presence of a coal and rock dynamic disaster of the first risk level. Wherein, the second risk level is higher than the first risk level.

[0038] It should be noted that when a coal and rock dynamic disaster occurs, it is accompanied by coal and rock fracturing. The deformation and fracturing process of the coal and rock mass generates electrical charges, causing a sharp increase or fluctuation in the charge amplitude of the measuring probe. Therefore, by determining whether the charge data amplitude detected in real time by the coal and rock charge probe exceeds a set amplitude, it is possible to determine whether a coal and rock dynamic disaster has occurred. Combined with... Figure 2 For example, when the amplitude of coal and rock charge data exceeds 25 PC (PC is an amplitude unit, i.e., 25 picocoos), it indicates a risk of coal and rock dynamic disasters; when the amplitude of coal and rock charge data exceeds 25 PC and the frequency is 10 times / min, it indicates a very high risk of coal and rock dynamic disasters, i.e., a higher risk level; when the amplitude of coal and rock charge data at the same location exceeds 30% of the previous day's monitoring data, it indicates a risk of coal and rock dynamic disasters.

[0039] In a second preferred embodiment, the number of coal and rock charge probes is at least two, such as a first coal and rock charge probe 100A, a second coal and rock charge probe 100B, a third coal and rock charge probe 100C, and a fourth coal and rock charge probe 100D, respectively installed in two intake airway coal and rock charge monitoring boreholes 403 and a return airway coal and rock charge monitoring borehole 404. In this case, the monitoring host 200 is used to provide early warning of coal and rock dynamic disasters based on the charge data, including: acquiring the charge data detected in real time by the at least two coal and rock charge probes; if the amplitude of the charge data of any one coal and rock charge probe exceeds a set amplitude, indicating the existence of a coal and rock dynamic disaster of the first risk level; if the amplitude of all acquired charge data exceeds the set amplitude, indicating the existence of a coal and rock dynamic disaster of the second risk level; and determining the location of the source of the coal and rock dynamic disaster based on all acquired charge data. The second risk level is higher than the first risk level.

[0040] Combination Figure 2 For example, when the amplitude of any coal and rock charge data exceeds 25 PC, it indicates a risk of coal and rock dynamic disaster. Simultaneously observing the first coal and rock charge probe 100A, the second coal and rock charge probe 100B, the third coal and rock charge probe 100C, and the fourth coal and rock charge probe 100D, if the amplitude of the charge data monitored by all four probes exceeds 25 PC, it indicates a significant risk of coal and rock dynamic disaster. Furthermore, using the charge data monitored by the first coal and rock charge probe 100A, the second coal and rock charge probe 100B, the third coal and rock charge probe 100C, and the fourth coal and rock charge probe 100D, the specific location of the destructive source of the coal and rock dynamic disaster can be calculated using relevant positioning formulas.

[0041] Regarding the aforementioned positioning formula, for example, let the spatial coordinates of the main coal and rock fracture source be (x, y, z), the charge source generated by the main fracture be q, the spatial coordinates of the first coal and rock charge probe 100A be (0, 0, a), the spatial coordinates of the second coal and rock charge probe 100B be (0, b, 0), the spatial coordinates of the third coal and rock charge probe 100C be (c, 0, 0), and the spatial coordinates of the fourth coal and rock charge probe 100D be (0, 0, 0). Then, the distances r1, r2, r3, and r4 of the four sets of coal and rock charge probes from the main coal and rock fracture source can be expressed as:

[0042]

[0043]

[0044]

[0045]

[0046] Based on these four formulas, and knowing the distances r1, r2, r3, and r4, the spatial coordinates of the main fracturing source of the coal and rock can be calculated as (x, y, z).

[0047] Figure 3 This is a schematic diagram of the structure of the coal and rock charge probe 100 in a preferred embodiment of the present invention. Figure 3 As shown, the coal and rock charge probe 100 includes: a housing 101; a sensing element 102, disposed on one outer end of the housing, for sensing charge data generated during the coal and rock fracturing process; a circuit board 103, disposed inside the housing 101 and electrically connected to the sensing element 102 and the monitoring host 200, for signal processing of the charge data sensed by the sensing element 102 and transmitting the processed charge data to the monitoring host 200; and an insulating plug 104, disposed between the sensing element and the housing and threadedly connected to the housing 101, for establishing electrical insulation between the sensing element 101 and the housing 102.

[0048] The induction sheet 102 can sense the charge generated during the fracturing of coal and rock without direct contact with the coal or rock. For example, it can be made of stainless steel or pure copper, such as the commonly available stainless steel disc of about 2 square centimeters. Induction sheets made of stainless steel or pure copper can effectively generate induced charges.

[0049] Among them, circuit board 103 is, for example, a stainless steel circuit board, which can effectively shield external interference signals.

[0050] The sensing element 102 is electrically connected to the circuit board 103 via a circuit connection wire 105 passing through an insulating plug 104. The insulating plug 104 establishes insulation between the sensing element 102 and the housing 101, preventing electrical conduction between them. Additionally, the coal and rock charge probe 100 includes a flared outlet 106 and an output cable 107 electrically connected to the circuit board and extending from the flared outlet 106. The other end of the output cable 107 is connected to the monitoring host 200 to provide charge data to the monitoring host 200.

[0051] In a preferred embodiment, the circuit board 103 integrates a filtering unit for filtering the charge data sensed by the sensing sheet 102.

[0052] Figure 4 This is a schematic diagram of the monitoring host in a preferred embodiment of the present invention. Figure 4As shown, the monitoring host 200 may include: a data acquisition board 201, electrically connected to the coal and rock charge probe 100, for acquiring the charge data; a display screen 202, for acquiring and displaying the charge data from the data acquisition board 201; and a battery 203, for supplying power to the data acquisition board 210 and the display screen 202, and for supplying power to the coal and rock charge probe through the data acquisition board.

[0053] For example, battery 203 is an explosion-proof battery that simultaneously supplies power to display screen 202, acquisition board 201, and each coal and rock charge probe 100. This allows acquisition board 201 to simultaneously acquire charge data output from each coal and rock charge probe 100, and can also convert the charge data into a 0-5V voltage signal linearly and output it. The sampling frequency of acquisition board 201 is, for example, 1kHz or higher. Furthermore, display screen 202 is electrically connected to acquisition board 201 via RS485 communication to display coal and rock charge data and its variation curves.

[0054] Further, refer to Figure 1 The monitoring host 200 can also be configured with the channel interfaces 301-304 as described above. Furthermore, the monitoring host 200 can also be configured with other interfaces, such as a USB interface 305 and a charging interface 306. The USB interface 305 can connect to other devices to enable data exchange between the monitoring host 200 and these devices; the charging interface 306 can connect to an external charging device to charge the monitoring host 200. In addition, the monitoring host 200 can also be configured with a power button 307 to control the start and stop of the monitoring host.

[0055] Figure 5 This is a flowchart illustrating another embodiment of a coal and rock dynamic disaster early warning method of the present invention, which utilizes the coal and rock dynamic disaster early warning device described in the above embodiment. Figure 5 As shown, the method may include the following steps S510 and S520:

[0056] Step S510: Adapting the coal and rock charge probes to be arranged in the coal mining face, and fixing the monitoring host according to the position of the coal and rock charge probes.

[0057] In a preferred embodiment, adapting the arrangement of the coal and rock charge probes to the coal mining face may include: arranging boreholes for placing the coal and rock charge probes within a specified distance from the coal mining face in the intake airway and / or return airway corresponding to the coal mining face, wherein each coal and rock charge probe is placed in one borehole. (Reference) Figure 2For example, within a range of 20 to 50 meters from the working face in the intake airway 401 and / or return airway 402, coal and rock charge monitoring boreholes 403 and / or 404 are respectively arranged in the intake airway and / or return airway, with each borehole spaced 3 meters apart and a depth of 1 to 2 meters. After removing excess coal slag from the boreholes, the operator places the coal and rock charge probe 100 at a position of 10 to 30 centimeters inside the monitoring borehole, fixes the monitoring host 200, turns on the power switch, and observes the coal and rock charge data and its change curve. The number of boreholes corresponds to the number of coal and rock charge probes, with one probe placed in each borehole.

[0058] Step S520: Obtain the charge data detected by the coal and rock charge probe through the monitoring host, and conduct early warning of coal and rock dynamic disasters based on the charge data.

[0059] For example, in the case of detecting at least one coal and rock charge probe, the following early warning of coal and rock dynamic disasters is provided:

[0060] 1) When the amplitude of coal and rock charge data from any probe exceeds 25 PC, it indicates a risk of coal and rock dynamic disaster, which is a normal risk level;

[0061] 2) When the amplitude of the coal and rock charge data of any probe exceeds 25 PC and the frequency is 10 times / min, it indicates that there is a great danger of coal and rock dynamic disaster, that is, the risk level is higher.

[0062] 3) When the amplitude of coal and rock charge data from the probe at the same location exceeds 30% of the previous day's monitoring data, it indicates a risk of coal and rock dynamic disaster, which is a normal risk level;

[0063] 4) When the charge data amplitude monitored by multiple probes all exceed 25 PC, it indicates a high risk of coal and rock dynamic disaster, i.e., a higher risk level. In this case, based on the charge data monitored by multiple probes, the specific location of the source of the coal and rock dynamic disaster can be calculated using relevant location formulas.

[0064] In summary, the coal and rock dynamic disaster early warning device and method of the present invention have the following advantages:

[0065] First, this invention provides a multi-channel, non-contact, and portable coal and rock dynamic disaster early warning device. The multi-channel advantage allows for the installation of either a single or multiple coal and rock charge probes. Each probe transmits charge data to the monitoring host via an independent signal channel, avoiding signal interference and facilitating simultaneous single-point dynamic disaster early warning analysis and multi-point dynamic disaster comprehensive prediction analysis by the monitoring host. The "non-contact" advantage means that workers do not need to directly contact the coal mining face; they only need to observe the data displayed on the monitoring host from a safe location, thus ensuring worker safety. The "portable" advantage refers to the simple structure of the coal and rock dynamic disaster early warning device in this embodiment, and the fact that the monitoring host is an easily movable device, allowing for convenient relocation of the monitoring host after the coal and rock charge probes are deployed, adapting to the site conditions.

[0066] Secondly, a novel early warning method for coal and rock dynamic disasters is provided. Utilizing the early warning device for coal and rock dynamic disasters in this invention, and adhering to the principles of safety, efficiency, and intelligence, it can achieve real-time, accurate, and location-based early warning of coal and rock dynamic disasters. This solves various problems such as poor real-time performance, high cost, difficulty in implementing early warning schemes, high false alarm rate, missed alarms, and inability to locate the disaster. It not only improves the efficiency of early warning for coal and rock dynamic disasters but also enhances its accuracy.

[0067] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0068] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0069] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0070] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0071] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0072] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0073] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0074] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0075] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A coal and rock dynamic disaster early warning device, characterized in that, include: Coal and rock charge probes are designed for use in coal mining faces to detect charge data generated by coal and rock fracturing during the mining process. as well as The monitoring host is electrically connected to the coal and rock charge probe and is used to acquire and perform early warning of coal and rock dynamic disasters based on the charge data; The coal and rock charge probe is of one type, and the monitoring host is used to provide early warning of coal and rock dynamic disasters based on the charge data, including: acquiring real-time charge data detected by the coal and rock charge probe; if the amplitude of the charge data exceeds a set amplitude, indicating the presence of a coal and rock dynamic disaster of the first risk level; and acquiring charge data detected by the coal and rock charge probe within a preset time period; if the frequency with which the amplitude of the charge data exceeds a set amplitude within the preset time period is greater than a set frequency, indicating the presence of a coal and rock dynamic disaster of the second risk level; wherein the second risk level is higher than the first risk level. The coal and rock charge probe includes: shell; An induction element, placed on one side of the outer end of the housing, is used to sense the charge data generated during the coal and rock fracturing process; A circuit board, housed within the housing and electrically connected to the sensing element and the monitoring host, is used to process the charge data sensed by the sensing element and transmit the processed charge data to the monitoring host; and An insulating plug is disposed between the sensing element and the housing and is threadedly connected to the housing to establish electrical insulation between the sensing element and the housing.

2. The coal and rock dynamic disaster early warning device according to claim 1, characterized in that, The sensing element is a stainless steel sensing element or a pure copper sensing element, and / or the circuit board is a stainless steel circuit board.

3. The coal and rock dynamic disaster early warning device according to claim 1, characterized in that, The circuit board integrates a filtering unit for filtering the charge data sensed by the sensor.

4. The coal and rock dynamic disaster early warning device according to claim 1, characterized in that, The monitoring host includes: The acquisition board is electrically connected to the coal and rock charge probe and is used to acquire the charge data; A display screen is used to acquire and display the charge data from the acquisition board; and A battery is provided to power the acquisition board and the display screen, and to power the coal and rock charge probe via the acquisition board.

5. The coal and rock dynamic disaster early warning device according to claim 4, characterized in that, The monitoring host also includes a channel interface for the coal and rock charge probe, wherein each coal and rock charge probe corresponds to one channel interface, and the channel interface is used to realize the electrical connection between the corresponding coal and rock charge probe and the acquisition board.

6. A coal and rock dynamic disaster early warning device, characterized in that, include: Coal and rock charge probes are designed for use in coal mining faces to detect charge data generated by coal and rock fracturing during the mining process. as well as The monitoring host is electrically connected to the coal and rock charge probe and is used to acquire and perform early warning of coal and rock dynamic disasters based on the charge data; The coal and rock charge probes are at least two in number, and the monitoring host is used to provide early warning of coal and rock dynamic disasters based on the charge data, including: acquiring charge data detected in real time by the at least two coal and rock charge probes; if the amplitude of the charge data from any one coal and rock charge probe exceeds a set amplitude, indicating the presence of a coal and rock dynamic disaster of the first risk level; if the amplitude of all acquired charge data exceeds the set amplitude, indicating the presence of a coal and rock dynamic disaster of the second risk level; and determining the location of the source of the coal and rock dynamic disaster based on all acquired charge data; wherein the second risk level is higher than the first risk level. The coal and rock charge probe includes: shell; An induction element, placed on one side of the outer end of the housing, is used to sense the charge data generated during the coal and rock fracturing process; A circuit board, housed within the housing and electrically connected to the sensing element and the monitoring host, is used to process the charge data sensed by the sensing element and transmit the processed charge data to the monitoring host; and An insulating plug is disposed between the sensing element and the housing and is threadedly connected to the housing to establish electrical insulation between the sensing element and the housing.

7. The coal and rock dynamic disaster early warning device according to claim 6, characterized in that, The sensing element is a stainless steel sensing element or a pure copper sensing element, and / or the circuit board is a stainless steel circuit board.

8. The coal and rock dynamic disaster early warning device according to claim 6, characterized in that, The circuit board integrates a filtering unit for filtering the charge data sensed by the sensor.

9. The coal and rock dynamic disaster early warning device according to claim 6, characterized in that, The monitoring host includes: The acquisition board is electrically connected to the coal and rock charge probe and is used to acquire the charge data; A display screen is used to acquire and display the charge data from the acquisition board; and A battery is provided to power the acquisition board and the display screen, and to power the coal and rock charge probe via the acquisition board.

10. The early warning device for coal and rock dynamic disasters according to claim 9, characterized in that, The monitoring host also includes a channel interface for the coal and rock charge probe, wherein each coal and rock charge probe corresponds to one channel interface, and the channel interface is used to realize the electrical connection between the corresponding coal and rock charge probe and the acquisition board.

11. A method for early warning of coal and rock dynamic disasters, characterized in that, The coal and rock dynamic disaster early warning device according to any one of claims 1 to 10 includes: The monitoring host is adapted to be positioned to accommodate the coal and rock charge probes at the coal mining face, and to fix the position of the coal and rock charge probes. The monitoring host acquires the charge data detected by the coal and rock charge probe, and performs early warning of coal and rock dynamic disasters based on the charge data.

12. The method for early warning of coal and rock dynamic disasters according to claim 11, characterized in that, The coal and rock charge probe adapted for placement in the coal mining face includes: In the intake and / or return airway corresponding to the coal mining face, at one or more locations within a specified distance range from the coal mining face, boreholes are arranged for placing the coal and rock charge probes, wherein each coal and rock charge probe is placed in one borehole.

Images